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7 Reasons Cosmetic Nail Treatments Like Kerasal and OptiNail Don’t Cure Fungus (and What Actually Does)
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7 Reasons Cosmetic Nail Treatments Like Kerasal and OptiNail Don’t Cure Fungus (and What Actually Does)

· · Comments
When dealing with embarrassing fungal nail infections, it’s tempting to reach for a product that promises quick results. Brands like Kerasal and OptiNail often claim visible improvements in just days. But there’s a crucial distinction to understand: cosmetic fixes versus clinically proven treatments. While Kerasal claims to be “clinically proven,” this refers only to its cosmetic effects, not its ability to cure fungus.

Let’s dive into the hidden drawbacks of these products and why they may not deliver the results you’re looking for.

1. Cosmetic Improvements Are Only Skin Deep

Cosmetic nail treatments like Kerasal and OptiNail’s cosmetic-only pen rely on ingredients like glycerin, lactic acid, and urea. These ingredients temporarily smooth and hydrate the nail’s surface, giving it a healthier appearance. However, they do not penetrate the nail bed or treat the underlying fungal infection.

Key Concern: The fungus remains active and contagious, risking spread to other nails, family members, or even intimate partners.

👉 Read: Cosmetic vs. Antifungal OTC Nail Treatments – What’s the Difference?

2. Does Not Cure Fungus

Despite claims of clinical testing, cosmetic nail products are not antifungal treatments. The "clinically proven" claims often refer to cosmetic improvements, not the elimination of fungus. For example, Kerasal’s studies show improved nail appearance but do not demonstrate fungal eradication.

Why This Matters: Fungal infections are persistent. Without an antifungal agent like tolnaftate, the infection will continue to grow beneath the surface.

3. Loosening or Detachment of Nails

Many users of cosmetic treatments report side effects such as nail loosening or detachment. While the goal is to improve nail appearance, these outcomes can make nails more vulnerable and exacerbate the problem.

Imagine This: You’re excited to show off your nails, only to find them detaching—leading to further discomfort and embarrassment.

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👉Read More: The 7 Hidden Health Risks of Ignoring Nail Fungus

4. Sunburn Alerts and Open-Toe Shoes  

Products like Kerasal recommend avoiding sun exposure due to sensitivity risks. This translates to limited options for wearing open-toe shoes, especially during summer months.

The Irony: These treatments promise confidence but can leave you hiding your feet even more.

5. Neglecting the Nail Bed = Ignoring the Root Cause

Cosmetic treatments explicitly warn against applying the product to the nail bed. This is because their harsh chemicals can cause irritation or pain if they come into contact with exposed skin. However, the nail bed is where the fungal infection thrives and must be treated.

Root Cause Neglected: Without addressing the nail bed, any cosmetic improvement is superficial and temporary.

6. Thinning and Weakening of Nails

Cosmetic nail treatments may thin the nail’s surface to create the appearance of smoothness. Over time, this can leave your nails weaker and more prone to damage or reinfection.

Long-Term Damage: Thinner nails are less resilient, making them more susceptible to fungal spread and breakage.

7. Time and Money Wasted

With no ability to cure fungus, these products require constant reapplication to maintain results. Over weeks and months, the costs add up—all while the fungal infection persists.

The Real Cost: Investing in a product that only masks the problem wastes both your time and your hard-earned money.

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👉Read More: Think Home Remedies Work for Toenail Fungus? Discover the Myths and the Safe Solution Here

Why Dermatool Is Different

Unlike cosmetic treatments, Dermatool Fungal Nail Treatment is clinically proven to cure and prevent fungal infections. Here’s why it works:

  • Tolnaftate 1%: A powerful antifungal ingredient backed by clinical studies to eliminate fungus at its source.
  • Treats the Nail Bed: Dermatool penetrates where it matters most, tackling the infection at the root.
  • Prevents Recurrence: By curing the infection, it ensures long-term results, giving you the confidence to wear open-toe shoes without worry.
  • No Harsh Side Effects: Dermatool is formulated to be effective without causing thinning, irritation, or detachment of nails.

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Don’t Settle for Superficial Fixes


If you’re ready to stop hiding your nails and start treating the root cause of fungal infections, Dermatool Fungal Nail Treatment is your solution. Unlike cosmetic products, it delivers real, lasting results.